Castor bean is a kind of soft oilseeds with high oil content. Extraction of oil from castor seeds is similar to sesame, rapeseeds, cotton seeds, sunflower seeds and other seeds. Traditional screw pressing process can be adopted for industrial oil production. The following two common kinds of castor oil extraction process. 01. Twice pressing process
How to start castor oil business?
If you plan to start castor oil business for medicinal application, it is better to adopt cold pressing method. Cold pressed oil has low acid value (<1.5) and light color (Y10, R1). It can meet the international medical standard (PP grade).
What is cold pressed castor oil?
Cold pressed oil has low acid value (<1.5) and light color (Y10, R1). It can meet the international medical standard (PP grade). However, the oil rate of cold pressing is low, sot the best process is to combine cold pressing with pre-pressing & extrusion and solvent extraction, so that to get both cold pressed castor oils and industrial oil.
How Castor oil is used as a lubricant?
Settling and Degumming: Castor oil contains gum material that affect utilization of the oil as a lubricant. Degumming is done to remove any aqueous appearances from the lipids and remove phospholipids from the oil. Bleaching: Bleaching is then done which helps in removal of coloring materials,phospholipids and oxidation products.